JPS6433774A - Optical disk controller - Google Patents
Optical disk controllerInfo
- Publication number
- JPS6433774A JPS6433774A JP19084687A JP19084687A JPS6433774A JP S6433774 A JPS6433774 A JP S6433774A JP 19084687 A JP19084687 A JP 19084687A JP 19084687 A JP19084687 A JP 19084687A JP S6433774 A JPS6433774 A JP S6433774A
- Authority
- JP
- Japan
- Prior art keywords
- flag
- data
- optical disk
- defective sector
- sector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To prevent a data part from being erroneously read at the time of failing to detect a defective sector flag in the reading of a defective sector by disposing a defective sector writing means in an optical disk controller and overwriting different data on a data part at the time of writing the defective sector flag. CONSTITUTION:When the optical disk controller ODC 1 writes the defective sector flag 102 to the sector designated by a host device 3, a seek instruction is transmitted to an optical disk device ODU 2 through an ODC control part 17. At the time of receiving the reading instruction of the data part 104 in which this flag 102 is written, a microprocessor control part 18 compares the data fed through a control part 17 with a predetermined reference to decide the flag or not. When it is decided that this data is the flag 102, the reading of a next flag address part 103 is stopped, it is searched until it coincides with a sector address part 101 and when it cannot be decided that it is the flag 102, a gap counter 16 is set to wait for the detection of the address 103.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19084687A JPS6433774A (en) | 1987-07-29 | 1987-07-29 | Optical disk controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19084687A JPS6433774A (en) | 1987-07-29 | 1987-07-29 | Optical disk controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6433774A true JPS6433774A (en) | 1989-02-03 |
Family
ID=16264746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19084687A Pending JPS6433774A (en) | 1987-07-29 | 1987-07-29 | Optical disk controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6433774A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100755979B1 (en) * | 2000-08-14 | 2007-09-06 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | Apparatus and method for identifying data packet at wire rate on a network switch port |
-
1987
- 1987-07-29 JP JP19084687A patent/JPS6433774A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100755979B1 (en) * | 2000-08-14 | 2007-09-06 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | Apparatus and method for identifying data packet at wire rate on a network switch port |
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